What
is t?What
is z?What
is z?What
isz?What
is t?Paired test in Statlets by using the summary statistics Paired test in Statlets by using the original dataConfidence intervals for the differenece between means by using summary statisticsConfidence interval for the difference between means by using the original dataConfidence intervals for the difference between population proportions by using summary statistics

ACTIVITY

Suppose that you wish to compare a new method of teaching reading to "slow learners" to the current standard method. You decide to base this comparison on the results of a reading test given at the end of a learning period of 6 months. Of a random sample of 22 slow learners, 10 are taught by the new method and 12 are taught by the standard method. The results of the reading test at the end of this period are given in the following table.

New Method (1)
Standard Method (2)
80
79
80
62
79
70
81
68
76
73
66
76
71
86
76
73
70
72
85
68
75
66

a. Use the data in the table to estimate the true mean difference between the test scores for the new method and the standard method. use a 95% confidence interval.

The output will include: Sample size, Mean difference (New Method - Standard Method), and Standard deviation of the difference followed by 95% confidence interval for the population mean difference.

b. Find a 99% confidence interval by following the steps given below:

The output will include: Sample size, Mean difference (New Method - Standard Method), and Standard deviation of the difference followed by 99% confidence interval for the population mean difference.

c. By using your answers to a and b, what can you say about the effectiveness of the new method?